Sensitivity, specificity and confidence interval values in test combinations
| Positive tests | Case number | Sensitivity (%) | Specificity (%) | Accuracy (%) | PPV (%) | NPV (%) |
| All positive | 5 | 4.4 | 97.2 | 31.2 | 80.0 | 29.1 |
| At least 6 positive | 31 | 30.3 | 88.8 | 47.2 | 87.0 | 34.0 |
| At least 5 positive | 39 | 38.2 | 86.1 | 52.0 | 87.1 | 36.0 |
| At least 4 positive | 74 | 69.6 | 66.6 | 68.8 | 83.7 | 47.0 |
| At least 3 positive | 95 | 84.2 | 44.4 | 72.8 | 78.9 | 44.4 |